package jdk.builder;public class Test {    public static void main(String[] args) {        TicketHelper helper = new TicketHelper();        helper.buildAdult("成人票");        helper.buildChildrenForSeat("有座儿童");        helper.buildChildrenNoSeat("无座儿童");        helper.buildElderly("老人票");        helper.buildSoldier("军人票");        Object ticket = TicketBuilder.builder(helper);    }}